:root {
    --blanco: #FFFFFF;
    --negro: #000000;
    --rojo: #FF0D00;
    --morado: #5D2099;
    --azul: #113C85;
    --verde: #126935;
    --amarillo: #F5E500;
    --naranja: #FF8800;
    --gris: #333333;
}

*{margin:0;padding:0;box-sizing:border-box;font-family:'Poppins',sans-serif;}

/* Fondo de la página: imagen + overlay negro semitransparente */
body{
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    background: url('../assets/images/fondo-inicio.png') center/cover no-repeat;
    position: relative;
    color: var(--blanco);
}

body::before {
    content:'';
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background-color: rgba(0,0,0,0.7); /* oscurece la imagen */
    z-index:0;
}

.login-container{
    width:100%;
    max-width:400px;
    padding:20px;
    z-index:1;
    position: relative;
}

.login-card{
    background: rgba(0,0,0,0.2); /* transparente para ver la animación */
    padding:40px;
    border-radius:15px;
    box-shadow:0 0 30px rgba(0,0,0,0.5);
    text-align:center;
    position:relative;
    overflow:hidden;
    transition: background 0.5s, color 0.5s;
    z-index:2;
}

/* Animación de colores en el card */
.login-card::before{
    content: '';
    position: absolute;
    width:300%;
    height:300%;
    top:-10%;
    left:-100%;
    z-index: -1;
    filter: blur(50px);
    background: linear-gradient(
        45deg,
        var(--rojo),
        var(--morado),
        var(--azul),
        var(--verde),
        var(--amarillo),
        var(--naranja)
    );
    animation: rotate 10s linear infinite;
    pointer-events: none;
}

@keyframes rotate{
    0%{transform:rotate(0deg);}
    100%{transform:rotate(360deg);}
}

/* Hover: detiene animación y pone fondo blanco */
.login-card:hover::before{
    animation-play-state: paused;
    background: var(--blanco);
}

.login-card:hover{
    background: var(--blanco);
    color: var(--negro);
}

/* Logo */
.logo,
.logo-hover{
    width: 250px;
    display: block;
    margin: 0 auto 40px auto;
}

.logo-hover{
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
}

.login-card:hover .logo-hover{
    opacity: 1;
}

/* Inputs */
.input-group{position:relative;margin-bottom:25px; z-index:1;}
.input-group input{
    width:100%;
    padding:12px 15px;
    background: transparent;
    border: 2px solid var(--blanco);
    border-radius:10px;
    color: var(--blanco);
    outline:none;
    transition: all 0.3s;
}

.login-card:hover .input-group input{
    color: var(--gris);
    border-color: var(--gris);
}

.input-group input:focus{border-color: var(--rojo);}
.input-group label{
    position:absolute; top:50%; left:15px;
    transform:translateY(-50%);
    color: var(--blanco);
    pointer-events:none;
    transition:0.3s;
}

.login-card:hover .input-group label{
    color: var(--gris);
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label{
    top:-10px; left:10px; font-size:12px;
    background: transparent;
    color: var(--rojo);
}

/* Botón */
.btn-login{
    width:100%;
    padding:12px;
    background: var(--rojo);
    border:none;
    border-radius:10px;
    color: var(--blanco);
    font-weight:bold;
    cursor:pointer;
    transition: all 0.3s;
    z-index:1;
}

.login-card:hover .btn-login{
    background: var(--negro);
    color: var(--blanco);
}

/* Footer */
.footer-text{margin-top:15px;font-size:14px; z-index:1;}
.footer-text a{color: var(--amarillo); text-decoration:none; transition:0.3s;}
.login-card:hover .footer-text a{color: var(--negro);}

.login-aviso{
    background: rgba(255,13,0,0.1);
    color: var(--rojo);
    border: 1px solid rgba(255,13,0,0.2);
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 13px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}